Skip to main content

HOW-TO: OEPE - FastSwap with Maven2 and M2Eclipse Plugin

At the moment there is not enough information if you want to jump start with OEPE (and of course using FastSwap) and Maven2 (using M2Eclipse plugin). This HOW-TO shows you how to achieve this. You need to have Eclipse (3.4 or 3.5), WLS (10.3 or 11) OEPE, Maven2 and M2Eclipse installed correctly before you can follow the steps below:

1. Create a web application with the webapp wizard (dynamic web project). Choose a webapp based on WLS (10.3 in my case). Please change following settings afterwards to be Maven complianced:
  • Source for web: src/main/webapp
  • Source for Java: src/main/java
2. Turn on Maven project on the project above ("mavenized the project") with M2Eclipse.

3. After you mavenized the project you can delete the directory build/classes since Maven uses target/classes directory. Everything should be customized to Maven directory structure automatically.

4. You can add
  • src/test/java - if you need it
  • src/test/resources - and also
  • src/main/resources
And don't forget to give a correct output direcory for each source directory (target/classes or target/test-classes). After that you will have following directory structure in your project:


5. Now you should be able to run maven "package" within your M2Eclipse plugin correctly. And also you should be able to deploy the web app in WLS just by doing "run on server".

6. You can skip this step because you are using OEPE which turned on FastSwap automatically. To make it sure that FastSwap works correctly, you can turn on FastSwap in the weblogic.xml file (please click on the image to make it larger).


Be careful: I get following problem if I turn on FastSwap in my weblogic.xml:
  • After turning on FastSwap in weblogic.xml file, the FastSwap mechanism does not work correctly! A change in a private field does not get updated in my webapp. If I turn this off again and redeploy my webapp, FastSwap is working correctly again. A change in a private field will be updated immediately. Do you get the same problem with your OEPE and WLS 10.3 here?
7. You have to add the "Maven Dependencies" container into your Java EE Module Dependencies for OEPE to be able to use all the jar files inside the Maven dependencies (please click on the image below to make it larger).


8. You made it. Now you can change your classes without having to redeploy the application and at the same time you still have all the advantages of using Maven2 in your project. Have fun!

Cheers,
Lofi.
Labels:

Comments

Unknown said…
Good stuff, I did something similar but got a problem when using Spring :-(
Have you used Spring with OEPE and Fastswop enabled?
When I do this I get a error. I raised this on the newsgroup - http://forums.oracle.com/forums/thread.jspa?threadID=977085&tstart=0
I have raised an Oracle case and while the support engineer has re-created my problem, and has raised a bug
1:08 PM
Post a Comment

Popular posts from this blog

Why "Polyglot Programming" or "Do It Yourself Programming Languages" or "Language Oriented Programming" sucks?

Last year we saw the launch of a new Web programming language Dart - Structured Web Programming from Google. A very interesting approach to support web application development. Not so long after Go, Groovy, Ruby, Scala, << name your DSL here >> ; we see Dart. Is it a good thing to have at least one programming language to solve one problem? The answer is, like we already know, it depends. Some important backgrounds you should know about the multi programming language paradigm are following: 1. You can read Martin Fowler article about language oriented programming with language workbenches which enables you to write small programming languages easily. In this article I see everyone writing their small languages, everywhere. In this concept we see DSL (Domain Specific Language) as the future of our programming activities. Source: http://martinfowler.com/articles/languageWorkbench.html 2. Neal Ford talked about Polyglot Programming, combining multiple programming language...
32 comments
Read more

Software Development Macro and Micro Process

If you think that in year 2012 all companies which produce software and IT divisions in our world have already their optimized software development process, you are wrong. It seems that we - software architects, software developers or whatever your title is - still need to optimize the software development process in many software companies and IT divisions. So what do you do if you enter a software company or IT division and you see following things: 1. There is a perfect project management process to handle all those development of software but it is a pure project management without a context to software development. So basically you only take care of cost, time, budget and quality factors. In the software development you still use the old fashioned waterfall process. 2. From the tooling point of view: you have a project management planning and controlling tool but you are still in the beginning of Wiki (almost no collaboration tool) and you don't use issues tracking sy...
20 comments
Read more

Creating Spring Bean dynamically in the Runtime

In my training someone asked me whether it is possible to create an object (a Spring Bean) dynamically so you can choose which implementation you want to have  in the runtime . So at the compile time you don't know what object actually should be created yet. The application should decide what object to be created based on a property file . 1. We create an annotation so we can mark the method which should be able to create the object dynamically: ... package your.package; ... @Retention(RetentionPolicy.RUNTIME) public @interface InjectDynamicObject { } ... 2. Use the new created annotation in your method which should be able to create the object dynamically: ... @Named("customerBo") public class CustomerBoImpl implements CustomerBo { ...     @Override   @InjectDynamicObject   public Customer getDynamicCustomer() {         return this.dynamicCustomer; } ... 3. Write an aspect with Pointcut a...
10 comments
Read more